Germs 101

What are germs and how do they spread?

Share This Page -

Most of the germs in the world are harmless to humans. Some types of bacteria even do us good, like the ones in our gut that help us digest food. But it’s worth knowing about germs and how they can be spread in your home – especially because a few simple hygiene steps can stop them in their tracks.

What are germs?

Germs (or pathogens, as they’re sometimes called) are microscopic organisms that can cause illness and infections if they get into our bodies.

The most common types are:

Bacteria (e.g. Salmonella which can cause food poisoning)

Viruses (e.g. Rhinovirus which causes the common cold)

Fungi (e.g. Trichophyton which can cause athlete’s foot)

Parasites (e.g. Giaridia Intestinalis which can cause diarrhoea)

How are germs spread?

Bacteria and fungi can thrive anywhere warm and moist in your home. But viruses are different. Around one hundredth the size of a bacterium, viruses need to be inside a living host in order to reproduce. It’s through this process that they cause disease.